Binder-element-tightening mechanism.



c. E. WISE. B INDER ELEMENT TIGHTENING MECHANISM. APPUCATION FILED MAY 3!; I9I6- RENEWED JULY 9.19M.

Paten tedAug. 20, 191.8.

2 SHEETSSHEET 1 C. E. WISE. BINDER ELEMENT TIGHTENING MECHANISM.

APPLICATION FILED MAY 3:, I916. RENEWED JULY 9. 191a. E

1,276,302. Patented Aug. 20, 1918.

2 SHEETSSHEET 2.

CLARENCE n. wrsn, or WASHINGTON, DISTRICT on ooLUMBrA.

BINDER-ELEMENT-TIGHTENING MECHANISMJ Specification of Letters Patent.

Patented. Aug. 20, 1918.

Application filed May 31, 1916, Serial No. 100,929. Renewed July 9, 1918. Serial No. 244,125.

To all whom it may concern:

Be it known that I, CLARENCE E. Wrsn, a citizen of the United States, residing at Washington, in the District of Columbia,

have invented new and useful Improvements vide a binder element tightening machine which can be readily and quickly released from operative position.

A still further object of my invention is to provide a binder element tightening machine having a slidably mounted supporting member, ti ghtenin g and-stretching m cans carried by the supporting member, and means cooperating with the tightening and stretching means and supporting member to lock the binder element when the device is in one position.

With these and other objects in view my invention consists in the novel construction and combination of parts illustrated in the accompanying drawings, hereinafter fully described, and pointed out in the appended claims. I

In the drawings, wherein I have shown the preferred embodiment of my inven* tion:

Figure 1, is a side elevation of a box assembling machine, showing the application of my invention thereto,

Fig. 2, is a side elevation of my device as seen from the side opposite to that shown in Fig. 1,

Fig. 3, is a fragmentary view, similar to Fig. 2, illustrating one position of my device, parts being broken away,

Fig. 4, is a plan of the structure shown in Fig. 2,

Fig. 5, is a detail, partly in longitudinal section, illustrating the binder element gripping member, 7

Fig. 6, is a vertical section taken on the line 66 of Fig. 2,

Fig. 7 is a bottom plan, and

Figs. 8. 9, 10, and 11 are details of the binder element gripping member.

In the manufacture ofboxes or the like from knockdown sections, a binder element in the form of a ribbon-like metallic tape is usually employed to retain the sections in set-up position. The box forming sections are usually assembled and placed upon a supporting platform and the binder element is then passed around the walls thereof, tightened and secured thereto.

It is the purpose of my present invention to construct a box forming machine having a single means for tightening the binder element secured to the box holding frame and positioned between the box supporting platform. and the binder element supply reel, and readily within the reach of the operator.

The means for tightening the binder element comprises a drum and a single means for clamping the tape against the drum and turning it to stretch the tape.

Referring to the drawings, the platform is composed of a horizontal body portion 10, upon which is placed the assembled sections of the box, and has front and rear legs 11 and 12 respectively, suitably secured thereto. A spacing member 13 is usually provided on the body portion and the assembled sections of the box placed upon the body portion 10 between the front legs 11 and the member 18. Secured to the rear of the legs 12 is a support 14, provided with journals 15 adapted to receive the shaft 16 of the tape reel 17. The tape 18 is adapted to be unwound from the reel 17 and passed around the boxstructure 19, the free end being suitably secured to the upper inner edge portion, the remaining portion of the tape overlapping the free end; i

The tightening device comprises a body portion 20 having bosses 21 and 22 suitably formed thereon for the reception of, a pair of horizontal shafts 23 and 24, which are firmly secured to the rear legs 12 of the frame by brackets 25. The upper boss'21 is preferably split and provided with upwardly extending members 26, which are I slightly spaced apart and adapted to be drawn together that the device may be frictionally held in any position along the supporting shafts 23 and 24:. A set screw 27 is in the present instance utilized for the purpose of clamping the members 26 of the boss 21. It is to be understood that any suitable means other than that just described may be used for retaining the body portion 20 in frictional engagement with the shafts 23 and 24.

Revolubly mounted upon the body portion 20 of the tightening device is a drum 28, having a U-shaped channel 29 formed in the periphery thereof for the reception of the tape 18. At a suitable point the peripheral edges 30 formed by the channel 29 are eX- tended to provide a pair of oppositely arranged ears 31, the purpose of which will presently be described.

A shaft 32 is passed through a central opening 33 formed in the drum 28 and its outer portion 3% reduced somewhat in diameter and passed through an opening 35 formed in the body portion 20 and the boss 36 provided on the side of the body portion opposite the drum 28'. A nut 37 serves to retain the drum in positive engagement with the bearing surface 33 with which the body portion is provided. In the operation of the device great strain is imparted to the drum as it rotates upon the shaft 32, and hence I have found it desirable to provide the above described construction, that looseness caused by the wearing of the contacting surfaces of the drum and the body portion may readily be taken up by tightening he nut upon the reduced end of the shaft.

Pivoted to the ears 31 formed on the peripheral side edges of the drum 28, is the inner end of an operating lever 39, which may be of any suitable length and is provided with a hand grip portion 40. The lever 39 is eccentrically mounted with respect tothe drum 28, the pivot pin 41 with which it is secured to the drum passing 1 through the opening 42 provided in the nose-like portion 43 formed on the extremity of the lever 39. Adjacent the portion 43,

the extremity of the lever 39 is reduced and provided with a cam-like portion 44, the lower edge 45 of which inclines downwardly somewhat from the lower edge of the portion 43'. The purpose of this construction of the lever 39 will presently be more fully described.

The tape gripping member is a shoe d6 pivoted to the portion A of the lever 39. It is provided with a pair of oppositely arranged ears :7 having registering openings 4-8 through which the pivot pin 49 passes. Rearwardly of the ears 4'? the body portion of the shoe 46 is formed to provide an extension 50 adapted to contact with the portion 4.3 of the lever 39, when the shoe is in released position and is held in contact with the lever through the mednun of a leaf spring 51 wlnch is secured to the front edge 'of the lever adjacent the portion ll and above the pivot pin 49. The leaf spring 51 extends downwardly and bears against the extended front edge 52 of the shoe 46. The tape gripping surface 53 of the shoe is arcuate and conforms to the curvature of the peripheral groove or channel 29 of the drum 28. The width of the shoe d6 is approximately the same as the width of the said groove, and it is to be understood that when the lever is in the position illustrated by Fig. 3 of the drawings, andit is desired to engage the shoe with the tape, the former will readily engage the latter within the channel 29, without causing friction to the side walls of the shoe contacting with the side walls of the channel, when the lever 39 is brought to the position illustrated by Fig. 2. In actual practice it has been found desirable to construct the pivot pin 41 of material considerably larger in diameter than the size of the p'vot pin 49. The reason for this is that the pin 49 does not bear any strain but merely acts as a pivot for the hinge connection between the shoe and the lever, the pin ll acting as a fulcrum upon which pres sure is imparted to the several parts as will be hereinafter more fully set forth.

The body portion 20 of the device is disklike and has an arcuate outer" edge 54- conceutrically formed with respect to the pivotal mounting of the drum; the edge 54: being reinforced for a considerable portion of its length, as shown, and provided with notches adapted to be engaged by the inner end 56 of a ratchet dog 57 pivoted as at 58 to the lever 39. The usual ratchet dog operating member 59' is pivoted as at 60 to the lever adjacent the handle portion 40 thereof and is connected to the ratchet dog 57 through the medium of a rod 61, having an expansible spring 62 mounted thereon to normally retain the dog 57 in engagement with the notches 55, in the usual well known manner. hen it is desired to move the lever 39 upwardly any distance for the purpose of securing a grip upon the tape, pressure is imparted to the end portion of the 'shoe operating member 59, winch causes the shoe to be released from the notches 55 and permit the lever and drum to be readily when the device is in the position illustrated by Fi 3, the spring- 62* pulls downwardly upon the lever and holds it out of engageilnent with the drum.

'lVhen it is desired to'tighten and stretch a length of tape around the box structure 1.9,

the operating lever 39 is thrown to theposi- .tion illustrated in Fig. 3 of the drawings. This operation is performed by releasing the dog 57 from engagement with the notches 50 and moving the handle upwardly. The lever 39 being pivoted to the drum 28 at 41 folds backwardly under the tension or the spring 62, and the head 63 of the pivot-bolt 58- rests upon the upper edge 64 of the body portion 20. In this position the shoe 46'is 1 thrown out of engagement withthe peripheral edge of the drum 28, and considerable space is provided between this member and the drum through which the tape can be readily inserted.

After the tape has been drawn through the gap formed by'the inner end of the lever 39 being thrown to its inoperative position it is drawn around the box structure'a'nd its free end secured to the inner upper corner portion thereof, as shown byFig. 1 of the drawings.

The lever 39 is nowlpulled rearwardly 'towardthe operator. Theangle of the lever and drum produced by this movement becoming obtuse and a downward pressure upon the lever causes the shoe 46 to engage the tape 18 and force the 'sameagainst the periphery of the drum. The cam-like lower -end of the lever 39 bearsag'ainstthe shoe as the lever is forced downwardly, thereby causing the surface 53 of the shoe to tightly engage the tape with the drum. Itfis to be understood that the drum revolves rearwardly as the lever '39 is moved down, and as the shoe frictionally engages the tape with the drum the tape is stretched. The ratchetmechanism provided retains the tape in stretched position, and in actual practice when the shoe has engaged the tape with the drum when the lever was approximately in a vertical position and then pulled downwardly to an approximate horizontal position sufficient tension to the tape has been provided to meet with the desired requirement of securely retaining the box-sections iii-position.

As the shoe-46 is eccentrically pivoted to the lever 39 all strain of the lever against the pivot pin 41 is reduced to a minimum,

as the portion 44 of lever 39 bears against the shoe, and the lower edge of the lever being inclined slightly, space exists between the lever and shoe below the pivot 49 as shown in Fig. 10. However, when the lever is folded and the dog released from the pei riphery of the drum, the rear portion of the shoe engages the rear lower corner portion of the lever,- the leaf spring 51retainingthe shoe in this'position. I

= When the tapeis being gripped bythe drum 28, and the tape is released.

shoe 4:6 as the lever 39 is beingpulleddownwardly the spring 51 acts as a means for retaining the nose of the shoe in engagement with thetape. It is to be understood that this spring has two functions, one to act as a shock absorber for the shoe when the tape is being gripped andthe other to prevent the shoe fromswinging away from the lower end. of the operating lever when the device is in the position illustrated by Fig. 3.

In actual practice, it has been found that when it is desirable to release the shoe from the tape after the same has been passed around the box structure and secured there to by exerting a. slightly upward pressure upon the handle 40 of the lever 39, with the ratchet dog engaging the notches 55, the lever 39 will buckle on the pivot ll, under tension of the spring 62*, which throws the a binder element, alever having a loose shoe coa'ctlng with said base member to engage ;the binder element between said member and shoewhen the lever is moved in one directionand assuming another position when said lever is moved .in an opposite direction, and a tension; means connecting said base member and said lever for retaining thesame in either position.

2. Binder element tightening mechanism including a movable drum adapted to receive a binder element, of means for clamping the binder element against the drum and adapted to movesaid drum in a predeter- 1 mined direction to'stretch the binder element, and a tension. spring connecting said drum with the said meanstomove-the said means to either side of its pivoted oint.

3. Binder element tightenmg means in-' eluding in combination with a revolubly mounted drum, a lever pivoted thereto and 1 having an engaging member at its inner end to cooperate with the periphery of said drum, a pin mounted ofi' center with respect to the drum, and a tension spring connectlng saidpin and lever whereby the latter exerts its force to move said lever to either side of.

its pivoted point.

i 4. Binder element tightening means in eluding in combination with a revolubly mounted drum, a lever pivoted thereto and havingan' engaging member at its inner end and to cooperate wlth the periphery of saiddrum and engaging member when said lever is moved 111 one Clli'Q-CtlOIl.itbQLltdtS pivot,

and spring means for throwing said lei-'iertto 'either side of 1ts pivot;

5. Binder element" tightening. mechanism 1 drum to bind the binderelement between the including a movable 'drum and a lever, the

' when moved in one direction, and means for retaining said gripping means in engagement with the binder element when moved to one position and for. retaining said gr1pping means out of engagement when moved to another position.

7. Binder element tightening mechanism including a drum, gripping means comprlsing amember mounted for movement relative to said drum and coacting to engage the binder element against said drum when moved in one direction, and a tension spring connecting said drum and said gripping latter-being pivotallyconnected therewith, a r

member having a revoluble drum adapted to receive a binder element, of means eccentricallycarried by said drum for engaging with said binder element to grip the same against the. drum and tighten the same when said drum is revolved in a predetermined direction, and tension means conneotlng said drum'and gripping and tightening means to retain the. said gripping and tightening means with respect to the drum.

, 11. Binder element tightening mechanism including in combination with a drum adapt- I ed to receive a binder element, of means carthe binder ried by said drum for clamping the binder element against the same and, adapted to rection to stretch the binder element when move the said drum in a predetermined disaid binder element is clamped thereto, and means for retaining said binder element in clamped position.

12. Binder element tightening mechanism including in combination with a drum adapted to receive a binder element, of a lever pivoted to the periphery of said drum having a loose shoe pivoted off center with respect to the lever pivot and coactin with said lever to engage the binder ei against the drum when the lever is moved in a predetermined direction, and tension means connecting said drum and said lever to retain said lever with respect to said drum when the binder element-is in stretched position.

18. Binder element tightening mechanism including in combination with a drum means for retaining said means in clamping engagement with thebinder element when moved to one positionand for retaining said means out of engagement. when moved to another positlon.

8. Binder element tightening. mechanism comprising a supporting member, a pivoted member thereon having a surface curved concentric with the pivot of said member, a single means for grippmg said binder element against the curved surface and tightening the same,*and tension means connecting said member and said gripping means to retain said single means in gripping posi tion. 1

9. Binder element tightening mechanism member, of a pivoted member thereon hav ing a curved. surface adapted to receive a means carried by said pivoted member for gripping said binder element against the curved surface thereof and moving the same in a predetermined dibinder element,

vrection to tighten said binder,element, and tension means connecting said pivoted member and: gripping and-tightening means to retain the said gripping; and tightening 'means with respect to thepivoted member.

.' 1()..v Binder element; tightening-means ineluding inreembination with a; f supporting adapted to receive a binder element, of a lever pivoted to the periphery of saiddrum having a loose shoe pivoted off center with 1 respect to the lever pivot and coacting with said lever to engage the binder element against the drum when the lever is moved in a predetermined direction and assuming another position when said lever ismoved in an opposite direction, and tension means including in combination with a supporting connectin said drum and said lever to retam said iever in either position. 14. Binder element tightening mechanis including a movable drum adapted to receive a binder element, means carried by said drum for clamping the binder element against the same and adapted to move said drum in a predetermined direction to stretch the binder element simultaneously with the gripping and clamping. operation, and tension means connecting the said drum and clamping means to retain the clamping means'with respect to the lever.

15. Binder element tightening mechanism including in combination with a drum adapted to receive a binder element, of a -lever pivoted to the periphery of said drum having a loose shoe pivoted ofl' center with respect tothe lever pivot and coacting with said. lever to engage the binder element against the ClI'IIIQ Wh'EII thelever-is moved inment 7 one direction only and assuming another position when said lever is moved in an opposite direction, and tension means for retaining said shoe in either position.

16. Binder element tightening mechanism including in combination with a movable drum adapted to receive a binder element, said drum having an operating lever pivoted. adjacent its periphery; of a shoe carried by said lever adapted to move into engagement with the periphery of said drum for engage ing the binder element only when the lever is moved in a predetermined direction and to disengage when moved in an opposite direction, and tension means connecting said lever and shoe whereby said shoe is retained in position when said lever is moved on its pivot.

17. Binder element tightening mechanism including a movable drum adapted to receive a binder element, said drum having a lever pivoted at its inner end to the periphery thereof; of a shoe also plvoted to the inner end of the lever at a point offset with respect to the lever pivot and for engagement with the periphery of said drum,

and tension means connecting said lever and shoe whereby said binder element may be gripped between said drum and shoe and tightened when the lever is moved in a predetermined direction.

18. Binder element tightening mechanism including in combination with a movable drum adapted to receive a binder ele ment and a lever, the latter being pivotally connected therewith; of a shoe carried by said lever for engagement with the face of said drum to grip the binder element thereto, said lever being adapted to be folded with respect to said drum whereby said shoe is moved out of engagement with the periphery of the drum to permit the insertion of a binder element when the lever is at the initial position, and tension means-for retaining said shoe out of engagement with the periphery of said drum. 7

19. Binder element tightening mechanism including in combination with a drum adapted to receive a binder element; of a lever pivotally connected therewith, a shoe 20. Binder element tightening mechanism including in combination with a drum adapted to receive a binder element having a lever hinged thereto, of a shoe carried by the inner end of said lever and offset with respect to the lever pivot to move into engagement with the periphery of said drum for engaging said binder element only when the lever is moved in a predetermined direction and to disengage when moved in an opposite direction, and tension means connecting said lever and shoe for maintaining said shoe in engaging position until released.

21. Binder element tightening mechanism including in combination with a base mem ber adapted to receive a binder element of means carried by said base member for clamping the binder element against the same, and tension means connecting said clamping means and base member to retain the binder element in stretched position.

22. Binder element tightening means ineluding in combination with a supporting member having a drum adapted to receive a binder element, of means carried by said drum'for engaging with said binder element to grip and tighten the same, means oooperating with said supporting member and V gripping and tightening means to control 7,

gripping and tightening means and said drum. n

In testimony whereof I have hereunto set my hand this 31 day of May 1916.

CLARENCE E. WISE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ID. 0. 

